SensAir Combustible Transmitter
Contents
1. Allowable 4 20 Loop Allowable Line Power Supply Termination Resistance Allowable Line Length 14 27 000 8 200 16 17 000 5 150 30 250 110 18 10 600 3 250 20 6 050 1 800 24 4 200 1 250 14 23 400 7 100 16 14 700 4 450 28 250 95 18 9 200 2 800 20 5 200 1 550 24 2 300 700 14 19 800 6 000 16 12 400 3 800 26 250 80 18 7 800 2 350 20 4 400 1 350 24 1 950 550 14 16 200 4 900 16 10 200 3 100 24 250 65 18 6 350 1 950 20 3 600 1 100 24 1 600 490 14 12 600 3 800 16 7 900 2 400 22 250 58 18 4 950 1 500 20 2 800 850 24 1 250 380 14 9 000 2 700 16 5 650 1 700 20 250 51 18 3 550 1 050 20 2 000 600 24 850 270 14 5 400 1 600 16 3 400 1 000 18 250 20 18 2 100 650 20 1 200 360 24 500 160 14 1 800 500 16 1 100 340 16 250 14 18 700 210 20 400 120 24 170 50 Sensidyne Document 360 0157 01 33 SensAir Combustible Gas Transmitter 17 Appendix Troubleshooting Guide Problem Unable to attain 4mA output current Unable to attain output current corresponding to LEL concentration 34 Cause No power to the transmitter Power input and 4 20mA output wires are reversed Power supply voltage is less than 12Vdc There is no connection between the power supply and the current output of the transmitter Sensor is incorrectly installed Power supply voltage is greater than 30Vdc Sensor assembly is defective Electronics board is defective Cu2. 24 11 1 Standard Horizontal 24 11 2 Vertical erret eerte gare tege tede tre eee a de ev d re ade d e ned cits dette agen dE 25 12 APPENDIX CALIBRATION EQUIPMENT eene nennen nnns 26 Zero Calibration Gases aaa aa rae Ped eeu aen aga 26 Calibration Gases annone teen m a hs ee ded ga a 26 13 APPENDIX ACCESSORIES AND 27 14 APPENDIX SEET HIT Neue 28 15 APPENDIX SELECTIVITY 30 16 APPENDIX ALLOWABLE LINE LENGTHS eene 33 17 APPENDIX TROUBLESHOOTING GUIDE eene 34 18 RETURNED MATERIAL 35 19 APPROVAL RA N GS ce iR cu ERU EC ARIS DR A DENIS 36 20 CONTROL DRAWINGS 37 Sensidyne Document 360 0157 01 5 SensAir Combustible Gas Transmitter Packing List and Notices You should have the following items SensAir Combustible Gas Transmitter unit Magnetic Screwdriver User Manual this document Always check to make certain you have received all of the items listed above If you have any questions or need assistance contact your Sensidyne Representative
3. 34v 5125 GALVY ATILVIHAOHddV 5 NOSSIWH3d SS3HdX3 3HL 1 ISOdYNd ANY HO Lave NI HO NI SH3H1O O1 035010510 aaivoridna 50 S319NV IOH LNOO 1839 YSLLINSNVYL HIVSN3S GSN 38 LON NOLLVINHOJNI HONS ANY AHVLAIMAOUA 3NAQISN3S SNIVLNOO LNINNDOG SIHL Y OvHd 02119345 ISIMYIH1O SSTINN S3ONVH3101 v HOLN3ANI 434 A38 9900X3 1VETIW4 JHL 35NVHO LON QAIAISSV10AQ AINO 092 01 9 0 FL LONPXIA Oil SONILVA TVAOHddV OIpIOE pue 51 15 sjoyooje seuojex JON ZSL ON L ZZo 029 14 Y Sd9 L 170 939 03N SONILVY NVIQVNVO SN S ALON 33S d GOHIAW SNTHIM NOISIAIG 31VT3dO3ddV 23d TIVISNI 7 1 62009 JO SLNAWAYINOAY IHL LSNW 4 NI NOILVTIVISNI T LYVd 777222 WSO TOT4123 8 NVIQVNVO JHL 39NVQ3020V NI 38 5 NI NOLLVTIVLSNI 705 NYH L TOS 5 011255 02 VdHN ISNv 3802 TIOT412313 WNOLLVN AHL 39NVQ3020V NI 38 QINOHS 5711 IHL NI NOLLVTIVLSNI
4. 4 LEDs The transmitter display has LEDs that light up when there is an alarm or fault condition occurring Also when the magnetic wand is brought close to a magnetic switch the LED associated with that switch lights up confirming that contact has been made between the wand and the switch 3 2 1 Electronics The electronics inside the condulet consist of a display board and a power supply board They are housed within the explosion proof condulet and converts the sensor response into a 4 20 mA current linearly proportional to the concentration of the combustible gas present at the sensor Sensidyne Document No 360 0157 01 Rev C 11 SensAir Combustible Gas Transmitter 3 3 The Sensor Assembly CAUTION DO NOT attempt to install the sensor assembly into any transmitter other than the designated SensAir Combustible Gas Transmitter The sensor assembly consists of a catalytic bead in a stainless steel housing Stainless steel is recommended for improved corrosion resistance in harsh ambient environments 12 The catalytic device detects a combustible substance before the concentration becomes potentially explosive Ambient gas or vapor diffuses to the sensor where the catalyst causes it to oxidize even though the concentration is less than 100 LEL Heat produced by this reaction at the sensor is proportional to the concentration of the combustible substance The heat produced is converted into an electrical signal which is monitore
5. Sensidyne maintains an instrument service facility at the factory to provide its customers with both warranty and non warranty repair Sensidyne assumes no liability for service performed by personnel other than authorized Sensidyne authorized personnel To facilitate the repair process please contact the Sensidyne Service Department in advance for assistance with a problem which cannot be remedied and or requires the return of the product to the factory All returned products require a Returned Material Authorization RMA number Sensidyne Service Department personnel may be reached at Sensidyne LP 1000 112 Circle N Suite 100 St Petersburg FL 33716 USA 800 451 9444 1 727 530 3602 1 727 538 0671 Service Fax email info sensidyne com All non warranty repair orders will have a minimum fee assessed whether the repair is authorized or not This fee includes handling administration and technical expenses for inspecting the instrument and providing an estimate However the estimate fee is waived if the repair is authorized If you wish to set a limit to the authorized repair cost state a not to exceed figure on your purchase order Please indicate if a price quotation is required before authorization of the repair cost understanding that this invokes extra cost and handling delay Sensidyne s repair policy is to perform all needed repairs to restore the instrument to its full operating condition Repairs are handled on a
6. Sensidyne Document No 360 0157 01 Rev C SensAir Combustible Gas Transmitter 9 Appendix Menu Map The setup and operation of the SensAir Combustible is controlled by parameters and procedures that are accessed through the menu structure Menu Map 1 Transmitter Modes 1 1 Zeroing 1 2 1 3 1 4 1 1 1 Hold Program for 2 seconds 1 1 2 ZrO will appear 1 1 3 Hold Program for 2 seconds to select 1 1 4 Up arrow LED will light zeroing transmitter 1 1 5 After 60 seconds Up arrow LED will go out zeroing completed Calibration 1 2 1 Hold Program for 2 seconds 1 2 2 ZrO will appear 1 2 3 Hold Down for 1 second 1 2 4 CAL will appear 1 2 5 Hold Program for 2 seconds to select 1 2 6 Down arrow LED will light calibrating transmitter if Up held for 15 seconds escape calibration mode 1 2 7 Apply gas if Up held for 15 seconds escape calibration mode 1 2 8 After 60 seconds of stable gas Down arrow LED will go out calibration completed 1 2 9 Pass or Failure Code will appear 1 2 10 Remove gas 1 2 11 Normal display will return after test gas dissipates Calibration Gas Concentration 1 3 1 Hold Program for 2 seconds 1 3 2 ZrO will appear 1 3 3 Continue to hold Down until GAS appears 1 3 4 Hold Program for 2 seconds to select 1 3 5 Present calibration gas concentration will appear and High Alarm LED will light
7. JO SLNINSYINDAH IHL um le ele HONS ANY 1 HLIM LSNW NI NOLLVTIVLSNI 5 12 IN porre S d 3NAGISN3S SNIV LNOO 1N3Af120Q SIHL 4 XIaN3dav 1 lOO gt NVIQVNVO JHL HLIM 32NVQSODOV 38 5 VAVNVO NI NOLLVTIVLSNI 72 S Ald HOLNGANI 27290 7506 TOS SNOLLO3S 02 Vd3N ISNv 3000 KOL TWNOLLWN JHL HLIM NI 38 5 ST IHL NOLLVTIVISNI T v800X3L1VETIAJ SALON WAOUddV LNOHLIM 39NVHO LON OG S 31ON 335 1 INAWdINOA 155 1230 AINO HONVNALENIVIN 220 012502 81 29 1 OIIP VUX3 O II SONILLVH TVAOHddV NV3dOMfa seJeudsouuge oipioe pue sJejse seuojex Dupnpu JON 291 ON 1 222 OZEIWA q v Sd9 1710 230 093 d SONILVY NVIQVNVO SN un INAWdINOA Wu Oe 31ON 33S 2 INOZ 4dOUNA 2 NOISIAIG 232 23 NOI1V2O1 155 12 SNOGUVZVH NOLLV90 1 800917 OL 9900X3 1VETIA GDH 1 10 07 Vu X3 OL VU p Q9H2 SECH alva NOLLdT42S3G 093 Aza 443 AHOLSIH NOISIATY 1 c D Sensidyne Document 360 0157 01 38 Notes Notes Manufactured by Sensidyne LP 1000 112 Circle N Suite 100 St Petersburg Florida
8. SALON AINAWdINOA wie d LNANdINDA SALON 335 T INOZ adOYNI NOISIAIG 232 23 NOLLVO01 d3IJISSV1 SNOGUVZVH sett OWLINOO SILON T ILON 2 60 3 wel III 5 3 545 10 Ee ULE 2 80 MAGANN 8600411 ULE 1 ST S0 OtQ LON 3 LON 8 3449300b SYM 202 sl e ULE 1 82 Z0 1LM DNIMVYG MIN NOLLdTH2S3d 093 Aza 449 ANOLSIH NOISIA3H I E D 37 Sensidyne Document 360 0157 01 Control Drawing Number 099 2014 02 1 4 D L 30 LHS 37505 LON HONS eenz ASSN DEN i YON e CO vL0C 660 AdNS 20 uM EE 3E NS Fav basai e 5 SLNAWSYINOAY NOLLVTIVLSNI S VADuday 3NAQISNaS 5 EE ONMIM TOALNOO 1430 H3LLLINSNVHI HIVSN3S SO FS TD de E e NOISIAIG ALWIddOUddV SHL Yad TIVLSNI orowe WEE ME 1 62009
9. first in first out basis Your order may be expedited if you authorize an expediting fee This will place your order next in line behind orders currently in process Pack the instrument and its accessories preferably in their original packing and enclose your return address purchase order shipping and billing information RMA number a description of the problem encountered with your instrument and any special instructions All prices are subject to change without notice If this is the first time you are dealing directly with the factory you will be asked to prepay or to authorize a COD shipment Send the instrument prepaid to SENSIDYNE 1000 112 Circle Suite 100 St Petersburg FL 33716 USA ATTENTION Service Department RMA SERVICE OPTIONS The Sensidyne Service Department offers a variety of service options which will minimize costly interruptions and maintenance costs These options include initial training on site technical assistance and full factory repairs Sensidyne has developed several programs which offer options best suited to your applications and needs For further information contact the Sensidyne Service Department at the following numbers 800 451 9444 1 727 530 3602 1 727 538 0671 Service Fax Sensidyne Document No 360 0157 01 Rev C 35 19 Approval Ratings SensAir Cmb HD Div1 WARNING Substitution of components may impair suitability for Division 1 WARNING Do not open enc
10. 0 mm 1 48 in 2 77 in 37 5 mm 70 3 mm ACROSS FLATS 2 00 in 5 03 in 50 8 mm TO REMOVE COVER 127 8 mm Sensidyne Document No 360 0157 01 Rev C 25 SensAir Combustible Gas Transmitter 12 Appendix Calibration Equipment Product Number Description 580 0001 01 Regulator 0 5 LPM for use with all gases 7010032 1 PVC Carrying Case holds two gas cylinders plus regulator tubing amp fitting 821 0604 01 Calibration Cup 7016042 Tygon Tubing 3 16 ID x 5 16 sold per foot Zero Calibration Gases Product Number Description 009824 15 Zero Gas for Oxygen O2 or Infrared sensors 100 Nitrogen 1031 009824 25 Zero Gas for all other sensors including Infrared 20 9 in 1031 Calibration Gases calibration gases are in Aluminum or Steel cylinders containing either 58 SL or 103 SL of gas Gas is shipped with a Material Safety Data Sheet MSDS A NIST traceable calibration certificate is available upon request Product Number Description 009824 68 Acetylene C2H2 1 25 vol 50 LEL in Air 103 SL 009824 6 Hydrogen Hz 2 vol 50 LEL in Air 103 SL 009824 2 Methane CHa 1 5 vol 30 LEL in Air 103 SL 009824 3 Methane 2 5 vol 50 LEL in Air 103 SL 009824 72 Pentane 0 75 vol 50 LEL 103 SL 009824 61 Propane 1 05 Vol 50 LEL in Air 103 SL 26 S
11. 70 21 36 1 07 1 79 Ethylene Oxide 44 0 3 0 1 9 57 95 16 26 0 79 1 32 Ethyl Ether 74 1 1 9 2 2 66 110 14 23 0 68 1 14 Ethyl Formate 74 1 2 8 2 3 69 115 13 22 0 65 1 09 n Heptane 100 2 1 1 2 6 78 130 12 19 0 58 0 96 n Hexane 101 2 1 1 2 7 EN 135 11 19 0 56 0 93 Hydrazine 32 0 2 9 2 2 66 110 14 23 0 68 1 14 Hydrogen 2 0 4 0 1 3 39 65 23 38 1 15 1 92 27 0 5 6 2 1 63 105 14 24 0 71 1 19 Isobutane 58 1 1 8 1 9 57 95 16 26 0 79 1 32 Isobutyl Alcohol 74 1 17 1 9 57 95 16 26 0 79 1 32 Isobutyl Benzene 143 2 0 8 3 1 93 155 10 16 0 48 0 81 Isopentane 72 2 14 2 2 66 110 14 23 0 68 1 14 Isopropyl Ether 102 2 14 2 3 69 115 13 22 0 65 1 09 Methyl Acetate 74 1 3 1 2 0 60 100 15 25 0 75 1 25 Methyl Alcohol 32 0 6 0 1 2 36 60 25 42 1 25 2 08 table continues on nextpage Sensidyne Document No 360 0157 01 Rev C 31 SensAir Combustible Gas Transmitter A LEL Concentration of Substance Equivalent to 1 LEL Methane B LEL Concentration of Substance Equivalent to 30 LEL Methane C LEL Concentration of Substance Equivalent to 50 LEL Methane D LEL Concentration of Methane Equivalent to 30 LEL Substance E LEL Concentration of Methane Equivalent to 50 LEL Substance Vol Concentration of Methane Equivalent to 30 LEL Substance Vol Concentration of Methane Equivalent to 50 LEL Substance Molecular Vol Substance Weight 100 LEL A B C D E F G Methane 16 0 5 0 1 0 30 50 30 50 1 50 2 50 Methylamine 3
12. Recommended Practices for gas detectors 18 Sensidyne Document No 360 0157 01 Rev C SensAir Combustible Gas Transmitter 7 Calibration NOTE The calibration procedure should be performed at ambient conditions including altitude with special attention paid to the humidity and temperature requirements of the transmitter Zeroing must be performed prior to Calibration 7 1 Equipment Calibration Gas Sensidyne offers a full line of equipment for properly calibrating the SensAir Combustible Gas Transmitter Calibration equipment available for the Combustible Gas Transmitter is described below Refer to Appendix Parts List for ordering information and for a complete listing of available calibration equipment and accessories Each calibration gas cylinder is shipped with an MSDS sheet a NIST traceable calibration certificate also is available upon request Regulator 0 5LPM regulator is recommended Calibration Cup 7 2 Zeroing Using the magnetic wand Hold Program for 2 seconds ZrO will appear Hold Program for 2 seconds to select Up arrow LED will light Zeroing of transmitter taking place After 60 seconds Up arrow LED will go out signifying Zeroing is complete 7 3 Select Calibration Gas Concentration Using the magnetic wand Hold Program for 2 seconds ZrO will appear Hold Down until GAS appears Hold Program for 2 seconds to select Saved Calibration Gas Concentration will
13. Se 7 1 ANEREM 9 2 SENSAIR PART NUMBER 5 2 10 3 COMPONENT EEN Case A 11 Seti ee UE gl HOUS EE 11 3 2 DIS PIAY iEn tee a 11 3 2 1 Electronics EE 11 3 3 NET 12 gt INSTALLATION BE 13 LEE PETERE 13 4 2 Transmitter Installation Enclosurel nennen nnnm nennen nnns 13 4 3 Transmitter Location 14 4 3 1 lgl Te EE 14 Transmitter Wining Diagram ee 14 4 3 2 Allowable Line Length JL epe ede ege Ee e 15 4 3 3 WIPING PrOCCU Ue ue EENEG e aad eed sao ee 15 9 OPERATION em M 16 521 Output CUrTernit mde mic mtb mice ite nisu aU e aD nu M 16 DE En GEET 16 5 2 1 ldem EE 16 5 2 2 Inhibition and POISONING E 17 6 STARTUP PROCEDURE 5 18 ES NI Opel BE 19 Pal sS Son tA ue E LT AD Ed MN mE NT 19 7 2 EIERE ee Ee AE Ee IR entm nate ten 19 7 3 Select Calibration Gas Concentration eene n nnn 19 7 4 Galibration Procedure sees Eden RA 19 8e MAINTE NA N CE sasssa 20 Sensidyne Document No 360 0157 01 Rev C SensAir Combustible Gas Transmitter 8 1 Sensor Assembly 20 9 APPENDIX MENU Mee 21 TU GEREENT 23 11 APPENDIX DIMENSIONAL DRAWINGS
14. appear Use Up and Down to adjust the Calibration Gas Concentration if needed Hold Program for 2 seconds to save new gas concentration 7 4 Calibration Procedure Using the magnetic wand Hold Program for 2 seconds ZrO will appear Hold Down for 1 second CAL will appear Hold Program for 2 seconds to select Down arrow LED will light calibrating transmitter To Escape calibration mode hold UP for 15 seconds Apply gas After 60 seconds of stable gas Down arrow LED will go out and calibration is complete Pass or Failure code will appear Remove gas Normal display will return after test gas dissipates Sensidyne Document No 360 0157 01 Rev C 19 SensAir Combustible Gas Transmitter 8 Maintenance The Sensidyne SensAir Combustible Gas Transmitter does not require any periodic maintenance unless a malfunction occurs In the event of a malfunction refer to Appendix Troubleshooting Guide Use the Troubleshooting Guide to determine the cause of and remedy for common problems which may occur in the field This section describes certain simple maintenance procedures that may be performed in the field Field maintenance should be limited to Sensor assembly replacement The disposable sensor assembly should be replaced if itis damaged or when it no longer performs properly 8 1 Sensor Assembly Replacement CAUTION The transmitter is certified explosion proof and is intended for use in areas whic
15. condition followed closely by a decrease in the output current to values less than 20 mA However the following decrease in output current is NOT necessarily due to dissipation of the combustible substance Following a flooded response when the area is again safe the transmitter must be re calibrated in order to ensure that the sensor assembly has not been damaged If calibration is not successful the catalytic device has been damaged and the sensor assembly must be replaced WARNING Should an overrange condition occur followed very closely by an apparent decrease in the concentration level investigate the area Consult the Safety Officer and CAREFULLY and THOROUGHLY investigate before entering A potentially explosive concentration of the combustible substance may still exist 16 Sensidyne Document No 360 0157 01 Rev C SensAir Combustible Gas Transmitter 5 2 2 Inhibition and Poisoning Inhibition and Poisoning occur when the combustible by products from some compounds are deposited onto the catalytic device within the sensor assembly These depositions will deactivate the sensor The degree of deactivation may be either partial or complete and may be either reversible or irreversible depending upon the concentration and the duration of exposure to the interfering compound The sensor assembly should never be exposed to any of the following substances known to inhibit and poison the catalytic device Silicon containing
16. of the version best suited to an application depends upon the application requirement A stainless steel sensor is for improved corrosion resistance in harsh ambient environments The sensor assembly is poison resistant and suitable for use where substances can inhibit and poison the sensor are known to be present in low concentrations The substances include Silicon containing compounds such as silicone oils and greases eg HMDS Phosphorus containing compounds such as pesticides Sulfur containing compounds such as carbon disulfide and hydrogen sulfide Halogen containing compounds such as fluoro and chloro carbons Lead containing compounds such as anti knock petroleum additives Metal containing hydride gases Sensidyne Document No 360 0157 01 Rev C 9 SensAir Combustible Gas Transmitter 2 SensAir Part Number System SensAir Combustible WITH DISPLAY gs20 oUUU UU V Display 6 7 No Display v Combustible Class 1 Division 1 Combustible Class Division 2 V 0 Horizontal Configuration standard Vertical Configuration v Standard V Cal for Methane Cal for Propane Cal for specific K factor Must specify 10 Sensidyne Document No 360 0157 01 Rev C SensAir Combustible Gas Transmitter 3 Components 3 1 Condulet Housing The condulet housing is made of cast aluminum wh
17. target gas in the atmosphere Expert consultation may be necessary to determine the most strategic location for optimum monitoring In all circumstances the plant safety officer or other appropriate personnel should be consulted before installation Site determination at a minimum must consider the following factors most probable location of a leak physical properties of the target gas air convection in the area due to ventilation or ambient conditions operational environment presence of interferent gases Ultimately monitoring efficiency and the degree of protection it affords depends upon how carefully this survey is made 4 2 Transmitter Installation Enclosure Refer to all local electrical codes to ensure compliance for proper mounting The transmitter mounts to a wiring conduit via 19 mm 3 4 female NPT at the condulet Metal conduit with a conduit seal within 18 of the condulet must be used to ensure that the installation is explosion proof To achieve a measure of RFI EMI immunity the enclosure and conduit must be grounded and shielded cable must be used The transmitter should be mounted with the sensor facing down to prevent moisture and debris from collecting on the sensor itself 1 Get confirmation from the safety officer that the area is free of hazardous atmospheres 2 Unscrew and remove the condulet cover 3 Confirm that the input and output wires are without power and thred thread them
18. through the opening of the condulet 4 Hold the wires out of the way and screw the condulet firmly into the conduit 5 Cap the wires and replace the condulet cover if you are not going to wire the transmitter at this time NOTE Five full threads of engagement are required to maintain explosion proof rating Sensidyne Document No 360 0157 01 Rev C 13 SensAir Combustible Gas Transmitter 4 3 Transmitter Location 4 3 1 Wiring Refer to all local electrical codes to ensure proper wiring compliance The use of shielded wire is recommended NOTE The power supply must have a power source return isolated from earth ground Shielded cable is recommended with shield terminated to earth ground to ensure a measure of RFI EMI immunity If the metal conduit to which the transmitter is mounted is not earth grounded the condulet must be earth grounded via the green wire The following sections provide specific information necessary to wire the transmitter to a power supply A wiring diagram is provided to aid in wiring the transmitter to a power supply Three 3 wires are required to connect the transmitter to a Sensidyne controller or a customer supplied 12 30 Vdc power supply and read out device See Figure 4 3 1 for wiring 4 3 1 1 Transmitter Wiring Diagram NOTE Installation and wiring must be in accordance with National Electrical Code Temperature rating of cable wire insulation must be specified to be above 75 C 167 F If cable r
19. 1 1 4 9 13 39 65 23 38 1 15 1 92 Methylcyclohexane 98 2 1 2 23 69 115 13 22 0 65 1 09 Methyl Ether 46 1 34 1 6 48 80 19 31 0 94 1 56 Methyl Ethyl Ether 60 1 2 0 29 69 115 22 0 65 1 09 Methyl Ethyl Ketone 72 1 14 24 72 120 13 21 0 63 1 04 Methyl Formate 60 0 4 5 15 45 75 20 33 1 00 1 67 Methyl Proprionate 88 1 2 5 2 0 60 100 15 25 0 75 1225 Methyl Propyl Ketone 86 1 24 72 120 13 21 0 63 1 04 Napthalene 128 2 0 8 29 87 145 10 17 0 52 0 86 Nitromethane 61 0 7 3 13 7 411 685 2 4 0 11 0 18 n Nonane 128 2 0 8 3 2 96 160 9 16 0 47 0 78 114 2 1 0 2 81 135 11 19 0 56 0 93 n Pentane 72 2 1 5 2 2 66 110 14 23 0 68 1 14 Propane 44 1 2 1 1 8 54 90 17 28 0 83 1 39 n Propyl Alcohol 60 1 22 XI 63 105 14 24 0 71 1 19 n Propylamine 59 1 2 0 21 63 105 14 24 0 71 1 19 Propylene 42 1 2 0 1 9 57 95 16 26 0 79 1 32 Propylene Oxide 58 1 23 2 2 66 110 14 23 0 68 1 14 Propyne 40 1 1 7 24 72 120 21 0 63 1 04 Toluene 92 2 1 2 25 5 125 12 20 0 60 1 00 Triethylamine 101 2 1 2 25 75 125 12 20 0 60 1 00 Trimehtylamine 59 1 2 0 21 63 105 14 24 0 71 1 19 Vinyl Ethyl Ether 17 24 72 120 13 21 0 63 1 04 m Xylene 106 2 1 1 26 78 130 12 19 0 58 0 96 106 2 1 0 28 84 140 11 18 0 54 0 89 p Xylene 106 2 1 1 2 6 78 130 12 19 0 58 0 96 32 Sensidyne Document No 360 0157 01 Rev C SensAir Combustible Gas Transmitter 16 Appendix Allowable Line Lengths
20. 1 3 6 Using the Up Down arrows the gas concentration will change once a second 1 3 7 Hold Program for 2 seconds to save gas concentration or no user action for 20 seconds and the gas concentration will revert to the previous value 1 3 8 Unit will return to the normal screen Adjust K Factor 1 4 1 Hold Program for 2 seconds 1 4 2 ZrO will appear 1 4 3 Continue to hold Down until FCt appears 1 4 4 Hold Program for 2 seconds to select 1 4 5 Present K Factor will appear and High Alarm LED will light 1 4 6 Using the Up Down arrows the gas concentration will change once a second The limits are 3 0 and 0 5 Sensidyne Document No 360 0157 01 Rev C 21 SensAir Combustible Gas Transmitter 22 1 5 1 6 1 7 1 8 1 4 7 Hold Program for 2 seconds to save the K Factor or no user action for 20 seconds and the K Factor will revert to the previous value 1 4 8 Unit will return to the normal screen Hold Current Loop 1 5 1 Hold Program for 2 seconds 1 5 2 ZrO will appear 1 5 3 Continue to hold Down until HOd appears 1 5 4 Hold Program for 2 seconds to select Sensor Voltage Adjust 1 6 1 The sensor voltage must be adjusted anytime the sensor is replaced in the main transmitter The voltage at the sensor must be maintained at 2 000 0 005 Volts DC 1 6 2 If the sensor voltage is adjusted the sensor must be re zeroed and calibrated 1 6 3 Hold Progra
21. 33716 USA 800 451 9444 727 530 3602 727 539 0550 fax www sensidyne com info sensidyne com Authorized EU Representative Schauenburg Electronic Technologies GmbH Weseler Str 35 45478 Mulheim Ruhr Germany 49 0 208 9 99 10 49 0 208 5 41 10 fax www schauenburg com international schauenburg com SEI Y Sensidyne LP 1000 112 Circle N Suite 100 St Petersburg Florida 33716 USA 800 451 9444 1 727 530 3602 1 727 539 0550 fax web www sensidyne com e mail info sensidyne com
22. 5 23 38 1 15 1 92 52 0 6 6 1 1 33 55 27 45 1 36 2 27 Cyclohexane 84 2 153 2 4 72 120 13 21 0 63 1 04 Cyclopropane 42 1 2 4 1 6 48 80 19 31 0 94 1 56 n Decane 142 3 0 8 3 0 90 150 10 17 0 50 0 83 Diethylamine 73 1 1 8 2 0 60 100 15 25 0 75 1 25 table continues on nextpage 30 Sensidyne Document No 360 0157 01 Rev C SensAir Combustible Gas Transmitter A LEL Concentration of Substance Equivalent to 1 LEL Methane B LEL Concentration of Substance Equivalent to 30 LEL Methane C LEL Concentration of Substance Equivalent to 50 LEL Methane D LEL Concentration of Methane Equivalent to 30 LEL Substance E LEL Concentration of Methane Equivalent to 50 LEL Substance Vol Concentration of Methane Equivalent to 30 LEL Substance G Vol Concentration of Methane Equivalent to 50 LEL Substance Molecular Vol Substance Weight 100 LEL Methane 16 0 5 0 1 0 30 50 30 50 1 50 2 50 Dimethylamine 45 1 2 8 1 7 51 85 18 29 0 88 1 47 2 3 Dimethyl Pentane 100 2 11 2 5 75 125 12 20 0 60 1 00 2 2 Dimethyl 72 2 1 4 2 5 75 125 12 20 0 60 1 00 1 4 Dioxane 88 1 2 0 2 2 66 110 14 23 0 68 1 14 Ethane 30 1 3 0 1 5 45 75 20 33 1 00 1 67 Ethyl Acetate 88 1 2 0 2 0 60 100 15 25 0 75 1 25 Ethyl Alcohol 46 1 3 3 1 4 42 70 21 36 1 07 1 79 Ethylamine 45 1 3 5 1 9 57 95 16 26 0 79 1 32 Ethylbenzene 106 2 1 0 2 8 84 140 11 18 0 54 0 89 Ethylcyclopentane 98 2 1 1 2 5 75 125 12 20 0 60 1 00 Ethylene 28 1 2 7 1 4 42
23. Gas Transmitter WARNINGS READ AND UNDERSTAND ALL WARNINGS BEFORE USE Read and understand ALL warnings before using this product Failure to read understand and comply with ALL warnings could result in property damage severe personal injury or death Product is calibrated prior to shipment however this product must be calibrated prior to initial use Calibrate at regular intervals in accordance with the User Manual Failure to calibrate in accordance with the instructions in this manual and at the specified intervals may result in the product not operating properly or malfunctioning Read and understand ALL applicable federal state and local environmental health and safety laws and regulations including OSHA Ensure complete compliance with ALL applicable laws and regulations before and during use of this product The user installer must understand the Hazardous Area Protection Concepts and Area Classifications applicable to their operation Metal conduit with a conduit seal within 18 of the condulet must be used to ensure that the installation is explosion proof UNDER NO CIRCUMSTANCES should this product be used except by qualified trained technically competent personnel and not until the warnings User Manual labels and other literature accompanying this product have been read and understood Failure to read and understand the User Manual may result in preventable severe personal injury or death ALWAYS wash your hands thor
24. SENSE MB Combustible Gas Transmitter User Manual Document No 360 0157 01 Rev C ENS FAIL Low HIGH 4 PROGRAM 7 TC E CH Sensidyne LP 1000 112 Circle Suite 100 St Petersburg Florida 33716 USA 800 451 9444 1 727 530 3602 1 727 539 0550 fax web www sensidyne com e mail info sensidyne com SensAir Combustible Gas Transmitter How to Use This Manual This manual is a basic guide for using the SensAir Combustible Transmitter It contains information on the transmitter transmitter components and the Normal Operation Display It also shows how to mount and wire the transmitter initial setup zeroing and span calibration In addition it covers commonly used operations regarding alarms and relays For reference the entire menu structure is outlined in Appendix Menu Map Because the SensAir Combustible Transmitter is menu driven it is important to become familiar with how the magnetic switch controls are used to navigate through the menus select specific menu items and change the many different parameters available to the user The Menu Map in the Appendix will help you toward this end Sensidyne Document No 360 0157 01 Rev C 3 SensAir Combustible Gas Transmitter Table of Contents This Mariali ttes eebe sa 3 Packing List and NOtICes Ee a aaa a 6 WARNING 1 nerd Eu
25. ance Caution For safety reasons this equipment must be operated and serviced by qualified personnel only Read and understand instruction manual completely before operating or servicing Attention Pour des raisons de securite cet equipement doit etre utilise entretenu et repare uniquement par un personnel qualifie Etudier le manual d instructions en entier avant d utiliser d entretenir ou de reparer equipement Prolonged exposure to excessively high concentrations of flammable gas may cause the sensor to produce erroneous readings Always make use of a rainshield to protect against variations caused by environmental conditions Perform tests only within the specified operating ranges Sudden changes in pressure may cause temporary fluctuations in the sensor reading For Class 1 Division installations Do not install in atmospheres containing keytones alcohols esters and acidic atmospheres Important Calibration Considerations Unit calibration must be done at altitude Verify concentration of calibration gas before making calibration adjustments Concentration can be altered by Deterioration of the concentration of compressed calibration gas sources during storage Interaction of the calibration gas with materials used to contain and transfer the gas as for example absorption onto and permeation through certain plastics Interaction of the calibration gas with materials and or ambient contaminants as for example ab
26. compounds such as silicone oils and greases Phosphorous containing compounds such as pesticides Sulfur containing compounds such as carbon disulfide and hydrogen sulfide Halogen containing compounds such as fluoro carbons and chlorocarbons Lead containing compounds such as anti knock petroleum additives Metal containing hydrides Hydrocarbon compounds that polymerize and carburize on heating such as styrene WARNING Following exposure to a poisonous substance the transmitter must be re calibrated in order to assure that the sensor assembly has not been damaged If calibration is not successful the catalytic device has been damaged and the sensor assembly must be replaced Sensidyne Document No 360 0157 01 Rev C 17 SensAir Combustible Gas Transmitter 6 Start Up Procedure It is necessary to perform the following start up procedure upon initial installation Performance of the startup procedure is not ordinarily required at the time of routine periodic calibration However the startup procedure should be performed when any of the following occurs loss of power for an extended period time upon sensor assembly replacement following a flooded response WARNING The safety officer must ensure that the area is safe before the condulet may be opened 1 Unscrew and remove the condulet cover 2 Make certain the transmitter has been wired properly 3 Apply power to the transmitter Obser
27. d by the electronics The sensor is capable of detecting combustible substances in the range 0 100 LEL WARNING The sensor CANNOT be used to monitor for toxic hazards Example Acetaldehyde has a 100 LEL of 4 v by volume which is equal to 40 000 ppm Thus 100 LEL is equivalent to 4 v 40 000 ppm and 1 LEL is equivalent to 0 04 v 400 ppm Acetaldehyde is also toxic having a Threshold Limit Value TLV of 100 ppm However since the minimum detectable concentration 1 LEL is greater than the TLV the sensor cannot be used to monitor for toxic hazardousness The sensor can be inhibited and damaged if it is flooded by exposure to concentrations greater than 100 LEL Exposure to concentrations above 100 LEL causes an over range indication followed by indication below 100 LEL due to loss of sensitivity even though a potentially explosive concentration of the combustible gas or vapor still exists Therefore should an over range condition ever exist always investigate carefully and thoroughly before entering the affected area Sensidyne Document No 360 0157 01 Rev C SensAir Combustible Gas Transmitter 4 Installation 4 1 Location The Combustible Gas Transmitter is a local area monitor It is imperative that the transmitter be located in an area where the greatest concentration of the target gas will be present in the shortest period of time after the occurrence of a leak or other increase in the concentration of the
28. ensidyne Document 360 0157 01 SensAir Combustible Gas Transmitter 13 Appendix Accessories and Spares Product Number Description 821 0603 01 Sensor Shield 821 0604 01 Calibration Cup 821 0605 01 Flow Block 214 0038 11 Sensor Sensidyne Document No 360 0157 01 Rev C 27 SensAir Combustible Gas Transmitter 14 Appendix Specifications Sampling System Detection Range Housing Electrical Specifications Power Requirement Voltage Current Maximum Termination Resistance Grounding Transmission Link Classification Certification Explosion Proof Rating Intrinsic Safety Rating Sensor Specifications Minimum Detectable Concentration Repeatability Accuracy Zero Drift Span Drift Response Time Rise Recovery Time Fall Operating Temperature Range Storage Temperature Range Operating Humidity Range Operating Pressure Range Sensor Life Expected Calibration Frequency Calibration Concentration Calibration Flowrate Oxygen Requirement 28 Diffusion 0 100 LEL Aluminum condulet 3 7166 1 7Kg 24 Vdc nominal 125 mA 12 30 Volts DC 300mA typical 125mA 500 250 recommended Condulet must be earth grounded via conduit 4 20 mA current non isolated 3 wires NEC CEC CL1 Div 1 amp Div 2 Groups A B C D 14 ATEX II 2 G Ex d T4 II 3 G Ex nAd IIC 4 Not intrinsically safe 1 LEL Minimum Detectable Change 396 of Full Scale 10 of I
29. entration of Substance Equivalent to 30 LEL Methane C LEL Concentration of Substance Equivalent to 50 LEL Methane D LEL Concentration of Methane Equivalent to 30 LEL Substance E LEL Concentration of Methane Equivalent to 50 LEL Substance Vol Concentration of Methane Equivalent to 30 LEL Substance G Vol Concentration of Methane Equivalent to 50 LEL Substance Molecular Vol Substance Weight 100 LEL Methane 16 0 5 0 1 0 30 50 30 50 1 50 2 50 Acetalaldehyde 44 0 4 0 1 7 51 85 18 29 0 88 1 47 Acetic Acid 60 0 4 0 1 9 57 95 16 26 0 79 1 32 Acetic Anhydride 102 1 2 22 66 110 14 23 0 68 1 14 Acetone 58 1 25 1 9 57 95 16 26 0 79 1 32 Acetylene 26 0 25 1 8 54 90 17 28 0 83 1 39 Allyl Alcohol 8 1 2 5 2 0 60 100 15 25 0 75 1 25 Ammonia 17 0 15 0 0 8 24 40 38 63 1 88 SIS n Amyl Alcohol 8 2 Ll 3 0 90 150 10 17 0 50 0 83 Aniline 93 1 1 3 2 6 78 130 12 19 0 58 0 96 78 1 1 3 2 4 72 120 13 21 0 63 1 04 Biphenyl 154 2 0 6 4 0 120 200 8 13 0 38 0 63 1 3 Butadiene 54 1 2 0 1 8 54 90 17 28 0 83 1 39 n Butane 58 1 1 6 1 7 51 85 18 29 0 88 1 47 1 Butane 56 1 1 6 2 2 66 110 14 23 0 68 1 14 cis 2 Butane 56 1 1 7 DA 63 105 14 24 0 71 1 19 trans 2 Butane DONI 1 8 2 0 60 100 15 25 0 75 1 25 n Butyl Alcohol 74 1 14 2 9 87 145 10 17 0 52 0 86 tert Butyl Alcohol 74 1 24 1 4 42 70 21 36 1 07 1 79 n Butyl Benzene 143 2 0 8 9 96 160 9 16 0 47 0 78 n Butryic Acid 88 1 2 0 2 6 T8 130 12 19 0 58 0 96 Carbon Monoxide 28 0 12 5 1 3 39 6
30. h may contain potentially explosive substances The safety officer must ensure that the area is safe before the condulet is opened 20 Remove power from the transmitter Unscrew and remove the condulet cover Disconnect the 3 colored wires from the sensor Remove the rainshield if one is attached Unscrew and remove the old sensor assembly from the lower opening of the condulet Discard the old assembly Thread the three colored wires from the new sensor assembly through the lower opening of the condulet Apply sealant to the threads of the new sensor assembly housing to ensure a watertight seal and prevent seizing Silicone based sealant must never be used on or near these sensors Conductive pipe dope is recommended Screw the new sensor assembly firmly into place Connect and secure the white wire to Ve Terminal 1 on the Sensor J2 terminal strip Connect and secure the yellow wire to the SIG Terminal 2 on the Sensor J2 terminal strip Connect and secure the pink wire to Ve Terminal 3 on the Sensor J2 terminal strip Make certain all wiring is secure Connect voltmeter to TP3 and TP4 Apply power to the transmitter Through the AdJ menu adjust the sensor voltage to 2 000 volts DC Replace and secure the condulet cover Make certain the condulet o ring is properly seated when tightening the condulet 5 full threads are required to meet the XP rating Allow the transmitter to warm up for at least 15 minutes
31. ich provides an explosion proof weather resistant barrier between the electronics module and the ambient environment The condulet is explosion proof to protect the electronics from damage due to an external explosion and to prevent any electrical malfunction of the electronics module from triggering an external explosion The housing is available with a window for the display of the transmitter An o ring on the condulet seated between the condulet cover and the base provides water tight protection for the internal electronic components It allows the transmitter to be used outdoors during inclement weather conditions 3 2 Display The transmitter with display has Program and Up and Down selector magnetic switches These are controlled via the magnetic screwdriver provided with the unit Information on operating the various controls is located in the Appendix Menu Map The display shows the following 1 Gas Concentration The gas concentration is displayed in large characters units of measure are LEL 2 PROGRAM Control Switch The Program switch is used to enter the programming menu The switch is also used to select save a menu item 3 and The and control arrows used to scroll up or down list of items These controls also used to increase or decrease a value such as an alarm setpoint Holding the wand near the control switch causes the displayed value to either increase or decrease automatically
32. l copyright laws and is licensed for specific use with the SensAir Combustible Gas Transmitter The user may not reverse engineer disassemble decompile or make any attempt to discover the source code of the software The software may not be translated copied merged or modified in any way The user may not sublicense rent or lease any portion of the software The right to use the software terminates automatically if any part of this license is violated DISCLAIMER SENSIDYNE LP ASSUMES NO RESPONSIBILITY WHATSOEVER TO ANY PARTY WHOSOEVER FOR ANY PROPERTY DAMAGE PERSONAL INJURY OR DEATH CAUSED BY OR RESULTING FROM IN WHOLE OR IN PART THE IMPROPER USE INSTALLATION OR STORAGE OF THIS PRODUCT BY THE USER PERSON FIRM ENTITY CORPORATION OR PARTY NOT ADHERING TO THE INSTRUCTIONS AND WARNINGS OR NOT ADHERING TO ALL FEDERAL STATE AND LOCAL ENVIRONMENTAL AND OCCUPATIONAL HEALTH AND SAFETY LAWS AND REGULATIONS THE SELLER SHALL NOT BE LIABLE FOR DIRECT INDIRECT CONSEQUENTIAL INCIDENTAL OR OTHER DAMAGES RESULTING FROM THE SALE AND USE OF GOODS AND SELLER S LIABILITY HEREUNDER SHALL BE LIMITED TO REPAIR OR REPLACEMENT OF ANY GOODS FOUND DEFECTIVE THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR USE OR FORA PARTICULAR PURPOSE WHICH ARE EXPRESSLY DISCLAIMED 6 Sensidyne Document No 360 0157 01 Rev C SensAir Combustible
33. losure while circuits are live or when combustible vapors may be present A CAUTION Read and understand instruction manual before operating or servicing Install in accordance with Control Drawing Number 099 2014 01 NEC CEC CL DIV 1 GPS A B D 14 C US FM6320 C22 1 No 152 Not including ketones alcohols esters and APPROVED acidic atmospheres CE 0518 2 ExdllCT4 Ta 20 C to 75 C 1 0066 Input Ratings 12 30VDC 500mA 6W SensAir Cmb HD Div2 WARNING Substitution of components may impair suitability for Division 2 WARNING Do not open enclosure while circuits are live or when combustible vapors may be present A CAUTION Read and understand instruction manual before operating or servicing Install in accordance with Control Drawing Number 099 2014 02 NEC CEC CL DIV 2 GPS A B D 14 C US FM6320 C22 1 No 152 Not including ketones alcohols esters and APPROVED acidic atmospheres 3G Gc Ta 20 to 75 084 Input Ratings 12 30VDC 500mA 6W 36 Sensidyne Document No 360 0157 01 Rev C 20 Control Drawings Control Drawing Number 099 2014 01 1 c v L dO LHS 31VOS LON OG assnsssHM ASSY LX3N T MONA 10 7102 660 8 SE 321 anoni 5 ZS 6102 82 20 NOSdWOHLM NOLLVTIVLSNI ONT 3iva SVAOUudav
34. m for 2 seconds 1 6 4 ZrO will appear 1 6 5 Continue to hold Down until AdJ appears 1 6 6 Hold Program for 2 seconds to select 1 6 7 Three dashes will appear and High Alarm LED will light 1 6 8 Using the Up Down arrows the sensor voltage will change every 0 2 seconds 1 6 9 Hold Program for 2 seconds to save the sensor voltage or no user action for 20 seconds and the sensor voltage will revert to the previous value 1 6 10 Unit will return to the normal screen Adjust 4 20 mA current loop 4 mA setpoint 1 7 1 Hold Program for 2 seconds 1 7 2 ZrO will appear 1 7 3 Continue to hold Down until A 4 appears 1 7 4 Hold Program for 2 seconds to select 1 7 5 Three dashes will appear and High Alarm LED will light 1 7 6 Using the Up Down arrows the 4 mA setpoint will change every 0 2 seconds 1 7 7 Hold Program for 2 seconds to save the setpoint or no user action for 20 seconds and the setpoint will revert to the previous value 1 7 8 Unit will return to the normal screen Adjust 4 20 mA current loop 20 mA setpoint 1 8 1 Hold Program for 2 seconds 1 8 2 ZrO will appear 1 8 3 Continue to hold Down until A20 appears 1 8 4 Hold Program for 2 seconds to select 1 8 5 Three dashes will appear and High Alarm LED will light 1 8 6 Using the Up Down arrows the 20 mA setpoint will change every 0 2 seconds 1 8 7 Hold Program for 2 seconds to save the setpoint or no user actio
35. n for 20 seconds and the setpoint will revert to the previous value Sensidyne Document No 360 0157 01 Rev C SensAir Combustible Gas Transmitter 10 Appendix Fault Codes FOO Not Assigned 201 Sensor Failed 202 Cal Mode Calibration Fail outside gain range 203 Cal Mode Gas not present after 5 minutes User aborted calibration 204 Cal Mode Gas not stable after 5 minutes User aborted calibration Sensidyne Document No 360 0157 01 Rev C 23 SensAir Combustible Gas Transmitter 11 Appendix Dimensional Drawings 11 1 Standard Horizontal Mounting 5 03 in 127 8 mm 1 38 in 2 00 in gem 50 8 mm 1 35 0 49 in TO REMOVE i 114 0 mm 98 COVER i 25 0 mm 2X 3 4 14 NPT 6 27 in 159 3 mm 28 in 7 1 mm 3 85 in 97 8 mm k 43 3 mm ACROSS HEX ACROSS FLATS 1 48 in 37 5 mm 1 50 in 5 00 in 38 0 mm 127 0 mm TO REMOVE SENSOR 5 71 in 145 0 mm 24 Sensidyne Document No 360 0157 01 Rev C SensAir Gas Transmitter 11 2 Vertical Mounting 98 in 25 0 mm 1 38 in 35 0 mm 2 3 4 14 2 24 in 5 71 in 57 0 mm 145 0 mm 5 00 in 6 46 127 1270mm 164 0 mm 2 50 in 63 5 mm 3 60 in 1 50 in 91 5 mm 38 1 mm TO REMOVE 171 in SENSOR 43 3 mm ACROSS HEX 1 57 in 40
36. ndication or 596 of Full Scale whichever is less 1 LEL methane month 1 of signal month T90 lt 5 sec T50 lt 4 sec T10 30 sec 20 to 75 C 4 to 167 F 40 to 50 C 40 to 122 F 0 95 RH non condensing Nominal pressure effect due to variation of concentration resulting from compression or expansion with changing pressure Standard Monthly recommended 30 80 LEL of combustible substance 0 5 LPM recommended 1096 by volume minimum 1 year normal service Sensidyne Document No 360 0157 01 Rev C SensAir Combustible Gas Transmitter Special State Indication Indication is the 4 20 mA current loop at a value of 3 mA or below or a value of 21 6 mA or above User Adjustable Parameters Calibration Gas Concentration 10 to 100 LEL KSfactor 3 2 86 oo Seit 0 5 to 3 0 Sensor Voltage 1 8 to 3 0 Volts Current Loop 4 mA Setpoint 1 0 to 6 8 mA Current Loop 20 mA Setpoint 12 0 to 26 0 mA Sensidyne Document No 360 0157 01 Rev C 29 SensAir Combustible Gas Transmitter 15 Appendix Selectivity Factors NOTE SensAir has been performance tested using methane only therefore the instrument is intended for sensing methane specifically or intended to be use as a general purpose combustible gas detector when calibrated using methane A LEL Concentration of Substance Equivalent to 1 LEL Methane B LEL Conc
37. or call 800 451 9444 or 1 727 530 3602 PROPRIETARY NOTICE This manual was prepared by Sensidyne LP exclusively for the owner of the SensAir Combustible Gas Transmitter The material within this manual is the proprietary information of Sensidyne LP and is to be used only to understand and operate the instrument By receiving this document the recipient agrees that neither this document nor the information disclosed within nor any part shall be reproduced or transferred physically electronically or in any form or used or disclosed to others for manufacturing or for any other purpose except as specifically authorized in writing by Sensidyne LP COPYRIGHT NOTICE 2012 Sensidyne LP All rights reserved Information contained in this document is protected by copyright No part of this document may be photocopied reproduced or translated to another program or system without prior written authorization from Sensidyne LP TRADEMARK NOTICE Sensidyne the Sensidyne logo SensAlert the SensAlert amp SensAir Combustible logos T O D amp Test on Demand are registered trademarks of Sensidyne LP The trademarks and service marks of Sensidyne LP are protected through use and registration in the United States of America SOFTWARE LICENSE The software included with the SensAir Combustible Transmitter is the property of Sensidyne LP and shall remain the property of Sensidyne LP in perpetuity The software is protected by U S and internationa
38. oughly after handling calibrating or servicing this product ALWAYS wear eye protection such as safety goggles face shield chemical resistant gloves and chemical resistant clothing when handling chemicals or calibration sources DO NOT get chemicals gases fumes or vapors in your eyes or on your skin as they may cause severe burns to skin and eyes If chemicals gases fumes or vapors get in your eyes or on your skin wash the affected area with copious amounts of water and call a physician immediately ALWAYS avoid any contact of acids with your skin or eyes Seek immediate medical attention for any contact with acids ALWAYS calibrate in a well ventilated area Adequate precautions should be taken to prevent the buildup of ANY calibration sources or vapors Avoid breathing ANY calibration fumes or vapors as they may be hazardous to your health ALWAYS dispose of chemicals and calibration sources in compliance with ALL applicable safety laws regulations and guidelines for proper disposal Failure to do so may result in environmental damage property damage personal injury or death ALWAYS close ALL containers of chemicals used with this product after use ALWAYS ensure that any compressed calibration substance sources are empty prior to disposal should they be used ALWAYS use clean dry inert materials to contain and transfer substances used for calibration DO NOT remove cover or alter any label or tag on this product it
39. r Concentration is shown as a Percentage of Full Scale Because the SensAir Combustible Gas Transmitter measures 0 100 LEL 100 LEL 100 of Full Scale The transmitter is designed to respond similarly to most combustible substances at their respective Lower Explosive Limit LEL concentrations despite the fact that these combustible substances may differ greatly in their concentrations as measured in v percent by volume or ppm parts per million For example Methane becomes potentially explosive 100 LEL at a 5 v by volume concentration while n Octane becomes potentially explosive 100 LEL at a 1 v concentration Despite the fact that the percent by volume concentrations of methane and n octane are different the response of the transmitter to equal LEL concentrations of methane and n octane is very similar See Appendix for LEL characteristics and approximate selectivity factors for many common combustible substances 5 2 Interferents 5 2 1 Flooding Flooding occurs when there is exposure to flammable gas or vapor concentrations greater than 100 LEL regardless of the actual by volume The transmitter is not suitable for detection of combustible substances at any concentration greater than 100 LEL The catalytic device within the sensor assembly can be inhibited and damaged by exposure to such a large concentration In the typical flooded response the appearance of an output current greater than 20 mA occurs an over range
40. rrent output of transmitter is shorted 4mA is misadjusted Electronics board is defective Actual concentration of calibration substance is not the expected concentration Actual concentration of calibration substance is not the expected concentration is misadjusted Sensor assembly is defective Electronics board is defective Remed Apply 12 30Vdc Verify positive voltage at the power input Verify power supply voltage to be 12 30Vdc Verify wiring Verify wiring Verify power supply voltage to be 12 30Vdc Disconnect sensor assembly Measure the resistance between the colored wires If resistance is between any pair of wires is 1ohm or gt 5ohms replace sensor Replace electronics board Verify wiring Adjust the 4mA level Replace electronics board Verify the concentration of the calibration substance Replace the calibration substance and or assure proper delivery of the calibration substance to the sensor Verify that the outside of the sensor assembly is clean Blow away any debris on the sensor assy with Zero grade air if necessary Adjust the 4mA level Disconnect sensor assembly Measure the resistance between the colored wires If resistance is between any pair of wires is lt 1ohm or gt 5ohms replace sensor Replace electronics board Sensidyne Document No 360 0157 01 Rev C SensAir Combustible Gas Transmitter 18 Returned Material Authorization
41. s accessories or related products DO NOT operate this product should it malfunction or require repair Operation of a malfunctioning product or a product requiring repair may result in serious personal injury or death DO NOT attempt to repair or modify instrument except as specified in the Operation amp Service Manual If repair is needed contact the Sensidyne Service Dept to arrange for a Returned Material Authorization RMA Returned Material Authorization Users should refer to MSDS and suppliers instructions for proper handling and safety instructions for any chemicals used with this equipment Sensidyne Document No 360 0157 01 Rev C 7 SensAir Combustible Gas Transmitter WARNINGS READ AND UNDERSTAND ALL WARNINGS BEFORE USE Use ONLY genuine SENSIDYNE replacement parts when performing any maintenance procedures described in this manual Failure to do so may seriously impair instrument performance and affect the Hazardous Area Certification Repair or alteration of the product beyond the scope of these maintenance instructions or by anyone other than an authorized SENSIDYNE service technician could cause the product to fail to perform as designed and persons who rely on this product for their safety could sustain severe personal injury or death The SensAir Combustible Gas Transmitter is an ambient air monitoring device Restricting the access of ambient air to the sensor may result in less than optimal monitoring perform
42. sorption into water If further translation is required please contact Sensidyne EU Authorized Representative see Back Cover for contact information 8 Sensidyne Document No 360 0157 01 Rev C SensAir Combustible Gas Transmitter 1 INTRODUCTION This manual provides specific information concerning the installation operation calibration and maintenance of the SensAir Combustible Gas Transmitter IMPORTANT Owners of the Combustible Gas Transmitter must read this manual in its entirety in order to ensure proper operation of the transmitter The SensAir Combustible Gas Transmitter is an explosion proof single point device capable of detecting the presence of various substances which are either flammable gases or produce flammable vapors The transmitter detects each substance below its LEL Lower Explosive Limit before the concentration is great enough to create a potentially explosive atmosphere The standard transmitter consists of a display board and a power supply board housed in an explosion proof condulet and a stainless steel catalytic bead sensor specifically designed to detect combustible substances A complete monitoring system consists of the transmitter and a separate read out device amp power supply capable of monitoring a 4 20 mA output and supplying 12 30 Vdc power Product specifications are located in Appendix B Different versions of the transmitter are available see Part Number Table The selection
43. uns through temperatures which exceed 75 C it should be specified for that environment 3 Wire Powered Unit Power y 4 20 Output Lang Tue Ground Lem Blak FINI TERMINATION RESISTANCE HITE lt OWER SOURCE gt 2 2 V i EARTH OWER SUPPLY GROUN TRANSMITTER FIGURE 4 3 1 TRANSMITTER WIRING 14 Sensidyne Document No 360 0157 01 Rev C SensAir Combustible Gas Transmitter 4 3 2 Allowable Line Length The maximum distance between the power supply and the transmitter is known as the allowable line length It is a function of the power supply voltage loop resistance and termination resistance This in turn determines allowable loop resistance and wire size The allowable line lengths for various wire sizes as well as the allowable loop resistance for various power supply voltages The allowable voltage range for the power supply is 12 30 Vdc 4 3 3 Wiring Procedure The transmitter terminals will not accept wire gauges larger than 14 AWG In all cases the connections must be clean tight and protected from the weather They must meet all required electrical codes Wire the transmitter as follows N Get confirmation from the safety officer or appropriate personnel that the area is safe Verify that the conduit and the transmitter are securely connected together Verify that the input and output wires are without po
44. ve that the Display has proper indications If the Display does not have proper indication go to Appendix Troubleshooting Guide to determine the cause of the problem CAUTION Do not continue with the start up procedure until this problem has been corrected 4 Allow the transmitter to warm up for at least 15 minutes 5 Replace the condulet cover Allow the unit to stabilize for at least 1 hour before calibrating the transmitter 6 The Combustible Gas Transmitter must be calibrated prior to initial use and at regular monthly intervals thereafter In addition the calibration procedure must be performed if any of the following conditions occur loss of power for an extended period of time transmitter is overranged or flooded sensor assembly is replaced Failure to maintain this schedule could result in impaired system performance and or erroneous readings CAUTION Catalytic Bead sensors do not fail safe NOTE If calibration is being performed prior to initial use or after sensor replacement the transmitter must be allowed to stabilize with power applied for 1 hour before attempting the calibration procedure All Sensidyne gas detection equipment is functionally tested and calibrated with known zero and span gases before shipment to the customer However it is recommended that qualified personnel verify operation after initial installation using known zero and span gases For further information please consult the ISA
45. wer Unscrew and remove the condulet cover Verify that the total resistance of the wiring does not exceed the allowable loop resistance Attach and secure the power source return negative lead wire to the RTN Terminal 3 on the J1 connector Attach and secure the 4 20 mA output wire to the 4 20 mA Terminal 2 on the J1 connector Attach and secure the positive lead wire to the V Terminal 1 on the J1 connector Replace the condulet cover if not proceeding with start up at this time 10 Before applying power to the transmitter verify that all connections are correct 11 Go to Start Up Section when you are ready to perform the start up procedure Sensidyne Document No 360 0157 01 Rev C 15 SensAir Combustible Gas Transmitter 5 Operation NOTE The transmitter must be calibrated after initial installation and before normal operation is possible See Calibration Section Monthly calibration is recommended to ensure proper operation NOTE Catalytic Bead sensors do not fail safe therefore monthly calibration is recommended Under normal operating conditions the transmitter responds to the presence of combustible gas by producing a 4 20 mA current that is linearly proportional to the concentration of combustible gas present at the sensor 5 1 Output Current When calibrated the relationship between the output current of the transmitter in mA and the concentration of the target gas is linea
Download Pdf Manuals
Related Search